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400 V electrolytic capacitor and production technology thereof

A technology of electrolytic capacitors and electrolytic paper, which is applied in the direction of electrolytic capacitors, liquid electrolytic capacitors, capacitors, etc., can solve the problems of short load life, etc., and achieve the effects of prolonging life, increasing overall volume, and improving temperature resistance

Active Publication Date: 2014-03-26
FOSHAN LIMING ELECTRONICS GAOMING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a 400V electrolytic capacitor and its production process, aiming to solve the technical problem of short load life of the electrolytic capacitor in the prior art under the condition of 105°C (or above)

Method used

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  • 400 V electrolytic capacitor and production technology thereof
  • 400 V electrolytic capacitor and production technology thereof
  • 400 V electrolytic capacitor and production technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Take cathode foil and anode foil: electrocorrode cathode foil and anode foil, oxidize cathode foil and anode foil after electrocorrosion, and form an oxide film on the surface of cathode foil and anode foil; cut cathode foil, anode foil and insulating electrolytic paper, respectively The lead wire is connected with the cathode foil and the anode foil to form the negative electrode lead and the positive electrode lead, and the insulating electrolytic paper, the cathode foil and the anode foil are wound; the electrolyte is added, and the electrolyte is impregnated on the insulating electrolytic paper; the final assembly and crimping are carried out , charging, aging test and parameter detection.

[0052] In this embodiment, the composition of the electrolyte includes: 40% ethylene glycol, 20% diethylene glycol, 10% triethylene glycol, 10% glycerol, 10% gamma-hydroxybutyrolactone, sebacic acid 2.2%, ammonium sebacate 6.1%,: o-nitroanisole 0.9%, p-nitrobenzyl alcohol 0.1%, ...

Embodiment 2

[0056] This example is basically the same as Example 1, except that in this example, the composition of the electrolyte includes: 50% ethylene glycol, 10% diethylene glycol, 10% triethylene glycol, and 10% glycerol , γ-hydroxybutyrolactone 10%, sebacic acid 4.9%, ammonium sebacate 3%, o-nitroanisole 0.1%, p-nitrobenzyl alcohol 0.9%, benzene 0.1%, polyvinyl alcohol 1% .

[0057] In this embodiment, the voltage of the cathode foil is 5V, the capacity of the electrolytic capacitor is 6.8 μF, the diameter of the bottom surface of the housing is 13 mm, and the height is 20 mm.

Embodiment 3

[0059] This example is basically the same as Example 1, except that in this example, the composition of the electrolyte includes: 40% ethylene glycol, 10% diethylene glycol, 18.5% triethylene glycol, and 10% glycerol , γ-hydroxybutyrolactone 10%, sebacic acid 5%, ammonium sebacate 4.5%, o-nitroanisole 0.5%, p-nitrobenzyl alcohol 0.4%, benzene 0.3%, polyvinyl alcohol 0.3% , citric acid 0.5%.

[0060] In this embodiment, the voltage of the cathode foil is 3V, the capacity of the electrolytic capacitor is 8.2 μF, the diameter of the bottom surface of the housing is 13 mm, and the height is 21 mm.

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Abstract

The invention discloses a 400 V electrolytic capacitor and a production technology thereof. The 400 V electrolytic capacitor comprises a shell, a core, a sealing plug, a negative wire and a positive wire, wherein the core comprises a cathode foil and an anode foil; the core further comprises insulating electrolytic paper; electrolyte is added to the insulating electrolytic paper; the electrolyte is composed of ethylene glycol accounting for 40%-50%, diethylene glycol accounting for 10%-20%, triethylene glycol accounting for 10%-20%, glycerol accounting for 10%-20%, gamma-hydroxybutyrate lactone accounting for 10%-20%, sebacic acid accounting for 1%-10%, ammonium sebacate accounting for 1%-10%, o-nitroanisole accounting for 0.1%-0.9%, p-nitrobenzyl alcohol accounting for 0.1%-0.9%, benzene accounting for 0.1%-1%, polyvinyl alcohol accounting for 0.1%-1% and citric acid accounting for 0%-0.5%. The electrolytic capacitor has good temperature tolerance and long service life, and the load life reaches to 10000-15000 hours at 105 DEG C.

Description

technical field [0001] The invention relates to an electrolytic capacitor, in particular to a 400V electrolytic capacitor and a production process thereof. Background technique [0002] The volume (size) of the electrolytic capacitor is an important factor restricting the performance of the electrolytic capacitor. How to increase the size of the electrolytic capacitor to improve the temperature resistance of the electrolytic capacitor and increase the life of the electrolytic capacitor is the research direction of existing technical personnel. The electrolytic capacitors in the prior art generally have a load life of 1000-2000 hours at 105°C (or above), and these capacitors have poor durability when used in tunnel (highway) lighting, submarine lighting, stadium lighting, advertising lighting, etc. , It needs to be replaced frequently, but due to the complexity of the site, the replacement is difficult and the cost is high. [0003] Therefore, the prior art still needs to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/145H01G9/04H01G9/07H01G9/008H01G9/08H01G9/035
Inventor 张锦成黄永福
Owner FOSHAN LIMING ELECTRONICS GAOMING
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